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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
Lutinizing Hormone in females
sow estrus
humans: stress level vs sperm
2. 265-285 days
Sperm growth rate
Holstein Cow
Jersey Cow
Dairy Cattle Gestation
3. Look for infection - split - and rupture of the penis
Mares
cremaster muscle
penis and prepuce observation (BSE)
Holstein Cow
4. Luteolysis happens because of the ____________ hormone
sperm cell
prostaglandin
eminal vesicles
burdizzo
5. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
uterus
what has to happen for males for copulation to occur
scrotal circumference (BSE)
pelvis
6. Front feet and head first. (except for hogs and dogs)
organs used in spermatogenesis
humans: stress level vs sperm
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
normal presentation of the fetus
7. Scar tissue plugs up chambers of udder
stag
mastitis
sigmoid flexure
what has to happen for males for copulation to occur
8. Check feet and legs - look for masculine traits in build such as crest and muscling
dartos muscle
Sperm growth rate
visual evaluation (BSE)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
9. Way to know everything is alright with the breeding male
dartos muscle
purpose of Breeding Soundness Exam (BSE) for males
femininity of a heifer
dartos muscle
10. Animals which have many estrous periods per year (ex: cow - sow)
hypothalamus and pituitary gland
Dairy Cattle Gestation
polyestrous
ewe estrus cycle
11. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
penis sizes vs delivering methods
Culls bulls earlier (2 reasons)
mare estrus
castration
12. 114 days
vagina
sow gestation
sow estrus cycle
age and castration
13. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
cow gestation
monorchid
things to check for in a breeding soundness exam (BSE)
prostate gland
14. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
4 major reasons for culling dairy cows
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
mastitis
15. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
effects of BST
pelvis
monestrous
cervix
16. Milk ~305 days - dry 60 days prior to calving
reasons for castration
sperm cell
Dairy Cattle milking schedule
Bull's fibro-elastic penis
17. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
monorchid
growth lost from castration methods (knife & band)
why does the cow need fat deposits during pregnancy?
18. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
spermatogenesis
femininity of a heifer
visual evaluation (BSE)
age and castration
19. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
pelvis
colostrum
effects of BST
retractor muscles
20. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
cervix
libido test (BSE)
behavioral signs of estrus
Jersey Cow
21. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
Parturition
oviducts
visual evaluation (BSE)
Size of cow in relation to the amount of milk produced
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
cryptorchid
mare's estrous cycle
reasons for castration
23. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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24. (male) pushes the testes outward toward the legs for a cool-down off of the body
1. more cost effective - 2. powdered milk is in excess production
Holstein Cow
cremaster muscle
castration
25. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
#1 cost in production
colostrum
cowper's gland
reason for seasonal breeding periods
26. (switzerland) 2nd in size and milk production - most muscle -
Follical Stimulating in males
Brown Swiss Cow
ewe estrus cycle
Size of cow in relation to the amount of milk produced
27. Birthing process (termination of gestation)
things to check for in a breeding soundness exam (BSE)
ewe estrus
Parturition
normal presentation of the fetus
28. Depository for semen during insemination. where urine leaves the body
ewe estrus
vagina
semen evaluation (BSE)
oviducts
29. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
age and castration
testosterone
effects of BST
Size of cow in relation to the amount of milk produced
30. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
cow estrus cycle
cow gestation
Jersey Cow
Mares
31. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
reasons for castration
Brown Swiss Cow
elastrator
Dairy Cattle milking schedule
32. Important 'landmark' during palpation
Lutinizing Hormone in females
seasonally polyestrous
functions of progestrone
cervix
33. Days which have decreasing daylight hours
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34. 14-19 (17) days
spermatogenesis
4 major reasons for culling dairy cows
Dairy Cattle milking schedule
ewe estrus cycle
35. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
sow ovulation
testis (gonads)
van deferens
Blood
36. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
4 major reasons for culling dairy cows
penis and prepuce observation (BSE)
femininity of a heifer
Sperm survival specs
37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
seasonally polyestrous
feeding a high producing dairy cow
purpose of Breeding Soundness Exam (BSE) for males
visual evaluation (BSE)
38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
reasons for castration
ewe estrus cycle
Reasons for gestation length being affected
leydid or interstitial cells
39. Animal which has been castrated after puberty
sigmoid flexure
stag
sperm cell
reasons for castration
40. Failure to have both testis (gonads) descend
uterus
retractor muscles
cryptorchid
prostate gland
41. (LH) causes female's egg to break (her period)
uterus
feeding a high producing dairy cow
Lutinizing Hormone in females
dry matter and water
42. 30-38 hours after estrus cycle begins
sow ovulation
vagina
Dairy calves are removed from cow at birth to...
vagina
43. Prevent the cow from getting an infection from the calve
Brown Swiss Cow
purpose of Breeding Soundness Exam (BSE) for males
Dairy calves are removed from cow at birth to...
cow estrus
44. 283 days
cow gestation
sow gestation
ewe ovulation
growth lost from castration methods (knife & band)
45. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
cow estrus cycle
cow ovulation
colostrum
Bull's fibro-elastic penis
46. 114 days
1. more cost effective - 2. powdered milk is in excess production
sow gestation
eminal vesicles
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
47. Days which have increasing daylight hours
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48. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
polyestrous
mare ovulation
functions of progestrone
mare gestation
49. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Dairy Cattle milking schedule
Follical Stimulating in males
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
sow ovulation
50. Luteolysis happens because of the ____________ hormone
sow gestation
prostaglandin
ewe estrus
femininity of a heifer
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